Future e^+ e^- Colliders Sensitivity to H b b-bar Coupling and CP Violation
High Energy Physics - Phenomenology
2009-11-07 v2
Abstract
We perform a complete simulation of the process e^+ e^- --> b b-bar nu nu-bar, where nu can be an electron, muon or tau neutrino, in the context of a general Higgs coupling to b quarks. We parametrize the H b b-bar coupling as m_b/v (a + i gamma_5 b). Taking into account interference effects between pure Higgs and Standard Model contributions, we find that sensitivities of the order of 2% and 20% can be obtained at a future e^+ e^- collider for deviations of the and parameters respectively from their Standard Model values. Combining our analysis with an independent measurement of Gamma_{H --> b b-bar} can provide evidence about the CP nature of the Higgs sector.
Cite
@article{arxiv.hep-ph/0208133,
title = {Future e^+ e^- Colliders Sensitivity to H b b-bar Coupling and CP Violation},
author = {V. Braguta and A. Chalov and A. Likhoded and R. Rosenfeld},
journal= {arXiv preprint arXiv:hep-ph/0208133},
year = {2009}
}
Comments
3 pages, 4 figures; better kinematical variable analysed, 2 figures replaced